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Evaluation of rheological properties and performance of asphalt binder modified with nano clay

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dc.contributor.author Shantha, YGPB
dc.contributor.author Mampearachchi, WK
dc.contributor.author Adikary, SU
dc.contributor.editor Pasindu, HR
dc.date.accessioned 2022-05-30T10:22:29Z
dc.date.available 2022-05-30T10:22:29Z
dc.date.issued 2018
dc.identifier.citation Shantha, Y.G.P.B., Mampearachchi, W.K., & Adikary, S.U. (2018). Evaluation of rheological properties and performance of asphalt binder modified with nano clay [Abstract]. In H.R. Pasindu (Ed.), Proceedings of the Transportation Research Forum 2018 (p. 49). Department of Civil Engineering, University of Moratuwa. https://uom.lk/sites/default/files/civil/files/TRF%202018_0.pdf en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18061
dc.description.abstract The rheological behaviour of bitumen is very complex and it can vary from purely viscous to elastic, depending on the loading time and the temperature. Bitumen plays a major role in many aspects of road performance. Various investigations have been carried out related to the modified bitumen, to improve the performance of bituminous mixtures. Most of the Roads have failed due to the rutting and cracking of the bituminous layer, which is mostly due to the poor performance of bituminous binders. So, the modification of the bitumen is a major approach, and modified bitumen has been effectively used in many countries to construct pavements during the last three decades. This research presents a laboratory scale evaluation of the conventional and the fundamental rheological characteristics of modified binders with micro clay and Nano clay contain 2%, 4%, 6% & 8% by its weights. Engineering fields widely use montmorillonite (MMT) Nano clay for a wide range of applications. In Sri Lanka also, there had been research about the usability and characterization of MMT clay available at Mannar area near the Giant tank. The clay powder prepared from the original samples taken from the above area were added to the original bitumen of 60/70 penetration grade binder to prepare the modified binder. Modified bitumen samples were prepared at a mixing time of 25 minutes by adding Nano clay mixed at 1600C. The properties of the modified binders with Nano clay were evaluated in terms of penetration, softening temperature, ductility and dynamic viscosity tests. Finally each sample of modified bitumen was evaluated for rutting and fatigue resistance for fresh and aged samples with the Dynamic Shear Rheometer (DSR) test. It was observed by the results obtained from the tests that the softening point and viscosity increased up to 4% clay, penetration and ductility had decreased with the increasing of clay percentage. Rutting resistance had not improved compared to conventional bitumen and it showed that modified bitumen and the original sample showed PG 70 grade with 2%, 4%, 6% and original bitumen sample. It can be concluded that the montmorillonite clay modification helped to improve some characteristics of the bitumen binders. But at this level they are not at a stage enabling the verification of their application at a large scale. en_US
dc.language.iso en en_US
dc.publisher Department of Civil Engineering, University of Moratuwa. en_US
dc.relation.uri https://uom.lk/civil/divisions/transportation/trf/past-proceedings en_US
dc.subject Nano clay en_US
dc.subject Montmorillonite en_US
dc.subject Viscosity en_US
dc.subject Penetration en_US
dc.subject Softening point en_US
dc.subject Dynamic shear rheometer en_US
dc.title Evaluation of rheological properties and performance of asphalt binder modified with nano clay en_US
dc.type Conference-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Civil Engineering en_US
dc.identifier.year 2018 en_US
dc.identifier.conference Transport Research Forum 2018 en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos p. 49 en_US
dc.identifier.proceeding Proceedings of the Transport Research Forum 2018 en_US
dc.identifier.email c4chamod@gmail.com en_US
dc.identifier.email wasanthak@uom.lk en_US
dc.identifier.email suadi@uom.lk en_US


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